Master theses 2020 -2021 Master theses in medical radiophysics Development of a voxelized anthropomorphic phantom for Monte-Carlo simulations of dose deposition patterns based on CT images Evaluation of the beam losses and activation in realistic geometries of proton therapy installations using BDSim-Geant4 Intra beam scattering models and impact on the luminosity lifetime of future colliders Machine protection studies for the high-luminosity LHC